As a part of the on-going evaluation of Looking For Raid and the loot system, we have recently implemented a change to the Looking For Raid Need Plus system. Weapons, trinkets, rings, neck pieces, shields, offhand items, and the Robe of Glowing Stone are now class-restricted to their intended users. With the speed at which a Raid Finder group moves through a zone, we’ve found that it makes it challenging for players to evaluate loot decisions – by class restricting these items, we hope that the natural behavior will have a more positive set of results for everyone involved. This change will not apply to normal or heroic raid or dungeon loot rules.

Raid Finder and Need Plus are both very new systems, and we’re working to iterate on these systems rapidly to ensure that everyone has the best possible experience as we learn more about how players are using the system. Please keep in mind that this system is not considered complete and we have further plans to improve upon it within Mists of Pandaria.

If you looted an item from Looking for Raid which replaced another and you need Game Master assistance to recover your old item, please place a petition with the new item name, that you can no longer use it - and the old item name you need restored. For more information on the affected items, please visit the Customer Support forums here- http://us.battle.net/wow/en/forum/topic/3729953854#1

We apologize for the inconvenience.

Items - New Class Restrictions 12/13/2011
You might have noticed strange behaviors with some of your newly acquired items and some people posted about changes on the forums today, the official explanation appeared on the Customer Support forums!

Originally Posted by Blizzard
(Blue Tracker)

Some items were recently reclassified. You may find yourself in possession of one of these items and are no longer able to use it.

If this item replaced another and you need Game Master assistance to recover your old item, please place a petition with the new item name, that you can no long use it - and the old item name you need restored.

The following are the items that have changed with new/changed class restrictions (LFR Versions).

Why a class restriction on being able to wear it, and not a restriction on being able to roll on it? A rogue who'd want the bow would still be able to greed on it if no Hunters want it, for example... w/e

I've been following MMO-Champion for a year now, but never actually made an account untill now, just to comment on this post.
Nevertheless, this is not the point of my reply, my reply is below;

You're completely correct in regards to this. By giving the loot roll bonus to people in off-spec is most certainly unfair, and will result in an unjust enrichment. That happened to me last week in the Fall of Deathwing LFR. The two-handed sword dropped off Deathwing, and a Protection Warrior needed it; which he later gave to his Blood Death Knight friend, even though the Death Knight lost the roll. My point being here, supporting yours; is that the loot roll bonus should be fixed, so that people currently in off-spec, cannot exploit the system.

I opened a ticket about this matter; and the answer I got was that a team at Blizzard was doing everything to improve the LFR system, and its looting rules. They did not answer on my question directly, but rather gave the previously mentioned answer.

This broken mechanic beats the whole purpose of doing the LFR raids, when a group of people can team up, need on a certain item; and then give it to his/her friend. Hopefully this will get fixed soon.

Look on the bright side. One thing to remember is that even if the DK had a "better" chance of winning the roll because his warrior friend was willing to help him out, it didn't make your chance to win the roll any less likely. You still have a 1/X chance to win the roll regardless of how many people "team up".

I know it's not much, but it's better than nothing. At the very least, Blizz is demonstrating their willingness to apply a partial, "band-aid" fix until a more robust rolling system can be deployed in 5.0.

This is good, it will bring a fix the Diablo "click on every sinlge item that drops" mentality. Now let's see how long it will take to be only able to roll for items for your spec and (my favorite) NOT be able to roll if you have won the iitem before.. yes I am talking about the helm/shoulders for off-spec!

I think this might just enforce the need everything mentality, in that now people can just say, "blizz fixed it, anything I can need is something I should need"

So glad that Blizzard isn't waiting to address this. I lost a melee dps trinket last week to a huntard, who then tried to sell it to the group. My face still has a mark on it cause I facepalmed so hard.

Would have been funny the time he noticed you can't send anything but conjured items cross-realm.

Stupid way to do it. They should limit the items on what the specs main stat is, to stop Ele shaman rolling on No'kaled etc

This is a band-aid until they can get something better working.... They have said many times that they cannot determine your spec as of right now. It seems like it shouldn't be that difficult but apparently it is, hopefully soon they will be able to patch it up and do something based on spec, but for now this is a huge step in the correct direction. Don't qq about a change for the better, at least we got something.

Yes I think this is a fantastic idea! I did a LFR with my guild and was extremely ashamed of my guild when 2x Gurthalak dropped and one was won by my guild huntard and the other was won by my guild Paladin tank... they thought it was a great joke... I was too embarrassed to stay in the raid group with my name associated with ninjasI would also like to see some kind of change implemented that if they already have normal tier the roll bonus is lost... that same run and same Paladin tank rolled need on the LFR T13 helm token even though he was running around with his T13 normal helm -_- which stopped people who ACTUALLY needed it ie: myself and whoever else qualified for the piece getting it. Selfish people in LFR are frustrating!